/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 04:06:04,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 04:06:04,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 04:06:04,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 04:06:04,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 04:06:04,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 04:06:04,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 04:06:04,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 04:06:04,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 04:06:04,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 04:06:04,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 04:06:04,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 04:06:04,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 04:06:04,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 04:06:04,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 04:06:04,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 04:06:04,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 04:06:04,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 04:06:04,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 04:06:04,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 04:06:04,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 04:06:04,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 04:06:04,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 04:06:04,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 04:06:04,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 04:06:04,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 04:06:04,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 04:06:04,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 04:06:04,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 04:06:04,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 04:06:04,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 04:06:04,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 04:06:04,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 04:06:04,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 04:06:04,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 04:06:04,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 04:06:04,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 04:06:04,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 04:06:04,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 04:06:04,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 04:06:04,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 04:06:04,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 04:06:04,888 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 04:06:04,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 04:06:04,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 04:06:04,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 04:06:04,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 04:06:04,889 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 04:06:04,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 04:06:04,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 04:06:04,890 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 04:06:04,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 04:06:04,890 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 04:06:04,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 04:06:04,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 04:06:04,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 04:06:04,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 04:06:04,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 04:06:04,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 04:06:04,891 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 04:06:04,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 04:06:04,891 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 04:06:04,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 04:06:04,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 04:06:04,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 04:06:04,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 04:06:04,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 04:06:04,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 04:06:04,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 04:06:04,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 04:06:04,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 04:06:04,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 04:06:04,898 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 04:06:04,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 04:06:04,898 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 04:06:04,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 04:06:04,898 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 04:06:04,898 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 04:06:05,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 04:06:05,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 04:06:05,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 04:06:05,164 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 04:06:05,168 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 04:06:05,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c [2023-04-02 04:06:06,421 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 04:06:06,712 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 04:06:06,713 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c [2023-04-02 04:06:06,722 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a49f468fd/94d158ec9b2949c287a92ef1438ca940/FLAG8fab90089 [2023-04-02 04:06:06,734 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a49f468fd/94d158ec9b2949c287a92ef1438ca940 [2023-04-02 04:06:06,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 04:06:06,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 04:06:06,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 04:06:06,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 04:06:06,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 04:06:06,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 04:06:06" (1/1) ... [2023-04-02 04:06:06,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d25c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:06:06, skipping insertion in model container [2023-04-02 04:06:06,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 04:06:06" (1/1) ... [2023-04-02 04:06:06,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 04:06:06,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 04:06:06,954 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c[3645,3658] [2023-04-02 04:06:07,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 04:06:07,060 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 04:06:07,090 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c[3645,3658] [2023-04-02 04:06:07,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 04:06:07,142 INFO L208 MainTranslator]: Completed translation [2023-04-02 04:06:07,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:06:07 WrapperNode [2023-04-02 04:06:07,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 04:06:07,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 04:06:07,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 04:06:07,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 04:06:07,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:06:07" (1/1) ... [2023-04-02 04:06:07,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:06:07" (1/1) ... [2023-04-02 04:06:07,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:06:07" (1/1) ... [2023-04-02 04:06:07,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:06:07" (1/1) ... [2023-04-02 04:06:07,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:06:07" (1/1) ... [2023-04-02 04:06:07,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:06:07" (1/1) ... [2023-04-02 04:06:07,206 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:06:07" (1/1) ... [2023-04-02 04:06:07,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:06:07" (1/1) ... [2023-04-02 04:06:07,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 04:06:07,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 04:06:07,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 04:06:07,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 04:06:07,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:06:07" (1/1) ... [2023-04-02 04:06:07,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 04:06:07,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 04:06:07,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 04:06:07,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 04:06:07,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 04:06:07,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 04:06:07,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 04:06:07,288 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 04:06:07,288 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-02 04:06:07,288 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-02 04:06:07,288 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-02 04:06:07,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-02 04:06:07,289 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-02 04:06:07,289 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-02 04:06:07,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-02 04:06:07,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-02 04:06:07,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-02 04:06:07,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 04:06:07,292 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 04:06:07,292 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 04:06:07,293 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-02 04:06:07,293 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-02 04:06:07,293 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-02 04:06:07,293 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2023-04-02 04:06:07,293 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-02 04:06:07,293 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-02 04:06:07,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-02 04:06:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-02 04:06:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-02 04:06:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-02 04:06:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-02 04:06:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-02 04:06:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 04:06:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 04:06:07,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 04:06:07,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 04:06:07,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 04:06:07,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 04:06:07,296 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 04:06:07,296 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 04:06:07,296 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 04:06:07,296 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 04:06:07,296 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 04:06:07,296 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 04:06:07,296 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 04:06:07,296 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 04:06:07,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 04:06:07,296 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 04:06:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 04:06:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 04:06:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 04:06:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 04:06:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 04:06:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-02 04:06:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-02 04:06:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-02 04:06:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-02 04:06:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-02 04:06:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-02 04:06:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-02 04:06:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-02 04:06:07,299 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 04:06:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-02 04:06:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-02 04:06:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-02 04:06:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 04:06:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 04:06:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 04:06:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 04:06:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 04:06:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 04:06:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 04:06:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 04:06:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 04:06:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 04:06:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 04:06:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 04:06:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 04:06:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 04:06:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 04:06:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 04:06:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 04:06:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 04:06:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 04:06:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 04:06:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 04:06:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 04:06:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 04:06:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 04:06:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 04:06:07,472 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 04:06:07,475 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 04:06:08,026 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 04:06:08,034 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 04:06:08,034 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-02 04:06:08,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 04:06:08 BoogieIcfgContainer [2023-04-02 04:06:08,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 04:06:08,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 04:06:08,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 04:06:08,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 04:06:08,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 04:06:06" (1/3) ... [2023-04-02 04:06:08,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bad9a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 04:06:08, skipping insertion in model container [2023-04-02 04:06:08,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 04:06:07" (2/3) ... [2023-04-02 04:06:08,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bad9a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 04:06:08, skipping insertion in model container [2023-04-02 04:06:08,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 04:06:08" (3/3) ... [2023-04-02 04:06:08,042 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product59.cil.c [2023-04-02 04:06:08,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 04:06:08,057 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 04:06:08,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 04:06:08,104 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e8b9248, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 04:06:08,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 04:06:08,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 105 states have (on average 1.2952380952380953) internal successors, (136), 120 states have internal predecessors, (136), 50 states have call successors, (50), 31 states have call predecessors, (50), 31 states have return successors, (50), 46 states have call predecessors, (50), 50 states have call successors, (50) [2023-04-02 04:06:08,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-02 04:06:08,116 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:06:08,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:06:08,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:06:08,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:06:08,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1503419059, now seen corresponding path program 1 times [2023-04-02 04:06:08,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:06:08,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548282995] [2023-04-02 04:06:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:06:08,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:06:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:08,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:06:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:08,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:06:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:08,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:06:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:08,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:08,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:06:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:08,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 04:06:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 04:06:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:06:08,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:06:08,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548282995] [2023-04-02 04:06:08,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548282995] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:06:08,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:06:08,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 04:06:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266274311] [2023-04-02 04:06:08,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:06:08,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 04:06:08,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:06:08,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 04:06:08,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 04:06:08,419 INFO L87 Difference]: Start difference. First operand has 189 states, 105 states have (on average 1.2952380952380953) internal successors, (136), 120 states have internal predecessors, (136), 50 states have call successors, (50), 31 states have call predecessors, (50), 31 states have return successors, (50), 46 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 04:06:08,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:06:08,975 INFO L93 Difference]: Finished difference Result 337 states and 437 transitions. [2023-04-02 04:06:08,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 04:06:08,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2023-04-02 04:06:08,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:06:08,993 INFO L225 Difference]: With dead ends: 337 [2023-04-02 04:06:08,994 INFO L226 Difference]: Without dead ends: 182 [2023-04-02 04:06:09,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 04:06:09,008 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 107 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 04:06:09,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 23 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 04:06:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-04-02 04:06:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2023-04-02 04:06:09,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 86 states have (on average 1.244186046511628) internal successors, (107), 98 states have internal predecessors, (107), 35 states have call successors, (35), 29 states have call predecessors, (35), 24 states have return successors, (30), 26 states have call predecessors, (30), 30 states have call successors, (30) [2023-04-02 04:06:09,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2023-04-02 04:06:09,116 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 46 [2023-04-02 04:06:09,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:06:09,118 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2023-04-02 04:06:09,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 04:06:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2023-04-02 04:06:09,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-02 04:06:09,121 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:06:09,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:06:09,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 04:06:09,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:06:09,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:06:09,122 INFO L85 PathProgramCache]: Analyzing trace with hash -8855718, now seen corresponding path program 1 times [2023-04-02 04:06:09,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:06:09,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452448530] [2023-04-02 04:06:09,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:06:09,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:06:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:06:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:06:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:06:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:06:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-02 04:06:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 04:06:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:06:09,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:06:09,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452448530] [2023-04-02 04:06:09,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452448530] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:06:09,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:06:09,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 04:06:09,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107001960] [2023-04-02 04:06:09,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:06:09,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 04:06:09,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:06:09,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 04:06:09,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 04:06:09,265 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 04:06:09,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:06:09,703 INFO L93 Difference]: Finished difference Result 264 states and 320 transitions. [2023-04-02 04:06:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 04:06:09,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2023-04-02 04:06:09,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:06:09,711 INFO L225 Difference]: With dead ends: 264 [2023-04-02 04:06:09,711 INFO L226 Difference]: Without dead ends: 166 [2023-04-02 04:06:09,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 04:06:09,716 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 117 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 04:06:09,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 31 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 04:06:09,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-04-02 04:06:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 137. [2023-04-02 04:06:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 80 states have (on average 1.25) internal successors, (100), 92 states have internal predecessors, (100), 32 states have call successors, (32), 28 states have call predecessors, (32), 24 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-02 04:06:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2023-04-02 04:06:09,752 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 47 [2023-04-02 04:06:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:06:09,753 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2023-04-02 04:06:09,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 04:06:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2023-04-02 04:06:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-02 04:06:09,755 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:06:09,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:06:09,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 04:06:09,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:06:09,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:06:09,756 INFO L85 PathProgramCache]: Analyzing trace with hash -558617634, now seen corresponding path program 1 times [2023-04-02 04:06:09,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:06:09,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510051994] [2023-04-02 04:06:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:06:09,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:06:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:06:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:06:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:06:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:06:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 04:06:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 04:06:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:06:09,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:06:09,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510051994] [2023-04-02 04:06:09,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510051994] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:06:09,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:06:09,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 04:06:09,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421879711] [2023-04-02 04:06:09,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:06:09,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 04:06:09,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:06:09,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 04:06:09,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 04:06:09,950 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-02 04:06:10,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:06:10,868 INFO L93 Difference]: Finished difference Result 467 states and 576 transitions. [2023-04-02 04:06:10,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 04:06:10,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 51 [2023-04-02 04:06:10,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:06:10,871 INFO L225 Difference]: With dead ends: 467 [2023-04-02 04:06:10,871 INFO L226 Difference]: Without dead ends: 354 [2023-04-02 04:06:10,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-04-02 04:06:10,873 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 461 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 04:06:10,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 84 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 04:06:10,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-04-02 04:06:10,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 292. [2023-04-02 04:06:10,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 177 states have (on average 1.2824858757062148) internal successors, (227), 201 states have internal predecessors, (227), 64 states have call successors, (64), 56 states have call predecessors, (64), 50 states have return successors, (61), 48 states have call predecessors, (61), 60 states have call successors, (61) [2023-04-02 04:06:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 352 transitions. [2023-04-02 04:06:10,921 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 352 transitions. Word has length 51 [2023-04-02 04:06:10,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:06:10,921 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 352 transitions. [2023-04-02 04:06:10,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-02 04:06:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 352 transitions. [2023-04-02 04:06:10,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 04:06:10,924 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:06:10,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:06:10,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 04:06:10,924 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:06:10,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:06:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1867290272, now seen corresponding path program 1 times [2023-04-02 04:06:10,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:06:10,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129106309] [2023-04-02 04:06:10,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:06:10,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:06:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:11,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:06:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:11,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:06:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:11,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:06:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:11,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:11,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:06:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:11,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-02 04:06:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:11,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 04:06:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:11,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 04:06:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:06:11,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:06:11,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129106309] [2023-04-02 04:06:11,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129106309] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:06:11,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:06:11,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 04:06:11,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837066453] [2023-04-02 04:06:11,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:06:11,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 04:06:11,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:06:11,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 04:06:11,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 04:06:11,137 INFO L87 Difference]: Start difference. First operand 292 states and 352 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 04:06:11,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:06:11,956 INFO L93 Difference]: Finished difference Result 942 states and 1209 transitions. [2023-04-02 04:06:11,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 04:06:11,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 57 [2023-04-02 04:06:11,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:06:11,961 INFO L225 Difference]: With dead ends: 942 [2023-04-02 04:06:11,961 INFO L226 Difference]: Without dead ends: 674 [2023-04-02 04:06:11,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-04-02 04:06:11,963 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 293 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 04:06:11,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 79 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 04:06:11,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-04-02 04:06:12,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 539. [2023-04-02 04:06:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 330 states have (on average 1.2757575757575759) internal successors, (421), 377 states have internal predecessors, (421), 116 states have call successors, (116), 100 states have call predecessors, (116), 92 states have return successors, (117), 88 states have call predecessors, (117), 112 states have call successors, (117) [2023-04-02 04:06:12,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 654 transitions. [2023-04-02 04:06:12,078 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 654 transitions. Word has length 57 [2023-04-02 04:06:12,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:06:12,078 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 654 transitions. [2023-04-02 04:06:12,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 04:06:12,079 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 654 transitions. [2023-04-02 04:06:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 04:06:12,081 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:06:12,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:06:12,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 04:06:12,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:06:12,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:06:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1690282724, now seen corresponding path program 1 times [2023-04-02 04:06:12,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:06:12,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431096036] [2023-04-02 04:06:12,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:06:12,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:06:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:12,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:06:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:12,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:06:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:12,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:06:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:12,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:06:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 04:06:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:12,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 04:06:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 04:06:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:12,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 04:06:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:06:12,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:06:12,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431096036] [2023-04-02 04:06:12,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431096036] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:06:12,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:06:12,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 04:06:12,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060171010] [2023-04-02 04:06:12,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:06:12,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 04:06:12,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:06:12,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 04:06:12,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 04:06:12,300 INFO L87 Difference]: Start difference. First operand 539 states and 654 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 04:06:13,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:06:13,201 INFO L93 Difference]: Finished difference Result 1475 states and 1960 transitions. [2023-04-02 04:06:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 04:06:13,201 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 61 [2023-04-02 04:06:13,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:06:13,209 INFO L225 Difference]: With dead ends: 1475 [2023-04-02 04:06:13,210 INFO L226 Difference]: Without dead ends: 960 [2023-04-02 04:06:13,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-04-02 04:06:13,213 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 387 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 04:06:13,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 72 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 04:06:13,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-04-02 04:06:13,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 779. [2023-04-02 04:06:13,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 478 states have (on average 1.2259414225941423) internal successors, (586), 521 states have internal predecessors, (586), 150 states have call successors, (150), 130 states have call predecessors, (150), 150 states have return successors, (219), 152 states have call predecessors, (219), 146 states have call successors, (219) [2023-04-02 04:06:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 955 transitions. [2023-04-02 04:06:13,333 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 955 transitions. Word has length 61 [2023-04-02 04:06:13,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:06:13,333 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 955 transitions. [2023-04-02 04:06:13,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 04:06:13,333 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 955 transitions. [2023-04-02 04:06:13,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 04:06:13,337 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:06:13,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:06:13,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 04:06:13,339 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:06:13,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:06:13,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1333845043, now seen corresponding path program 1 times [2023-04-02 04:06:13,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:06:13,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910761400] [2023-04-02 04:06:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:06:13,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:06:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:06:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:06:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:06:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:06:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 04:06:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 04:06:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 04:06:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 04:06:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 04:06:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 04:06:13,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:06:13,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910761400] [2023-04-02 04:06:13,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910761400] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:06:13,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:06:13,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 04:06:13,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79488974] [2023-04-02 04:06:13,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:06:13,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 04:06:13,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:06:13,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 04:06:13,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 04:06:13,580 INFO L87 Difference]: Start difference. First operand 779 states and 955 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-02 04:06:14,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:06:14,281 INFO L93 Difference]: Finished difference Result 1799 states and 2424 transitions. [2023-04-02 04:06:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 04:06:14,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 98 [2023-04-02 04:06:14,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:06:14,288 INFO L225 Difference]: With dead ends: 1799 [2023-04-02 04:06:14,288 INFO L226 Difference]: Without dead ends: 1044 [2023-04-02 04:06:14,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-04-02 04:06:14,292 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 363 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 04:06:14,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 55 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 04:06:14,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2023-04-02 04:06:14,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 805. [2023-04-02 04:06:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 498 states have (on average 1.216867469879518) internal successors, (606), 541 states have internal predecessors, (606), 150 states have call successors, (150), 130 states have call predecessors, (150), 156 states have return successors, (227), 156 states have call predecessors, (227), 146 states have call successors, (227) [2023-04-02 04:06:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 983 transitions. [2023-04-02 04:06:14,372 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 983 transitions. Word has length 98 [2023-04-02 04:06:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:06:14,373 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 983 transitions. [2023-04-02 04:06:14,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-02 04:06:14,373 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 983 transitions. [2023-04-02 04:06:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 04:06:14,375 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:06:14,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:06:14,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 04:06:14,376 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:06:14,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:06:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2067635915, now seen corresponding path program 1 times [2023-04-02 04:06:14,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:06:14,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994245683] [2023-04-02 04:06:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:06:14,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:06:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:06:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:06:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:06:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:06:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 04:06:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 04:06:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 04:06:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 04:06:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 04:06:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 04:06:14,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:06:14,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994245683] [2023-04-02 04:06:14,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994245683] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:06:14,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:06:14,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 04:06:14,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76063829] [2023-04-02 04:06:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:06:14,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 04:06:14,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:06:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 04:06:14,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-04-02 04:06:14,609 INFO L87 Difference]: Start difference. First operand 805 states and 983 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-02 04:06:15,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:06:15,496 INFO L93 Difference]: Finished difference Result 1845 states and 2472 transitions. [2023-04-02 04:06:15,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 04:06:15,496 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 98 [2023-04-02 04:06:15,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:06:15,502 INFO L225 Difference]: With dead ends: 1845 [2023-04-02 04:06:15,503 INFO L226 Difference]: Without dead ends: 1064 [2023-04-02 04:06:15,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-04-02 04:06:15,506 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 363 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 04:06:15,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 65 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 04:06:15,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2023-04-02 04:06:15,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 821. [2023-04-02 04:06:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 510 states have (on average 1.2117647058823529) internal successors, (618), 553 states have internal predecessors, (618), 150 states have call successors, (150), 130 states have call predecessors, (150), 160 states have return successors, (231), 160 states have call predecessors, (231), 146 states have call successors, (231) [2023-04-02 04:06:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2023-04-02 04:06:15,627 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 98 [2023-04-02 04:06:15,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:06:15,628 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2023-04-02 04:06:15,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2023-04-02 04:06:15,628 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2023-04-02 04:06:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 04:06:15,630 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:06:15,630 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:06:15,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 04:06:15,630 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:06:15,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:06:15,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2075395274, now seen corresponding path program 1 times [2023-04-02 04:06:15,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:06:15,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851391164] [2023-04-02 04:06:15,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:06:15,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:06:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:06:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:06:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:06:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:06:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 04:06:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 04:06:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 04:06:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 04:06:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 04:06:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 04:06:15,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:06:15,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851391164] [2023-04-02 04:06:15,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851391164] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:06:15,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 04:06:15,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 04:06:15,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081769351] [2023-04-02 04:06:15,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:06:15,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 04:06:15,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:06:15,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 04:06:15,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 04:06:15,808 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-02 04:06:16,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:06:16,650 INFO L93 Difference]: Finished difference Result 2734 states and 3697 transitions. [2023-04-02 04:06:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 04:06:16,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 98 [2023-04-02 04:06:16,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:06:16,663 INFO L225 Difference]: With dead ends: 2734 [2023-04-02 04:06:16,664 INFO L226 Difference]: Without dead ends: 1937 [2023-04-02 04:06:16,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-04-02 04:06:16,669 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 477 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 04:06:16,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 82 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 04:06:16,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2023-04-02 04:06:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1635. [2023-04-02 04:06:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1044 states have (on average 1.1915708812260537) internal successors, (1244), 1121 states have internal predecessors, (1244), 294 states have call successors, (294), 270 states have call predecessors, (294), 296 states have return successors, (475), 296 states have call predecessors, (475), 290 states have call successors, (475) [2023-04-02 04:06:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2013 transitions. [2023-04-02 04:06:16,900 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2013 transitions. Word has length 98 [2023-04-02 04:06:16,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:06:16,900 INFO L495 AbstractCegarLoop]: Abstraction has 1635 states and 2013 transitions. [2023-04-02 04:06:16,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-02 04:06:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2013 transitions. [2023-04-02 04:06:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 04:06:16,905 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:06:16,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:06:16,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 04:06:16,905 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:06:16,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:06:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1107178992, now seen corresponding path program 1 times [2023-04-02 04:06:16,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:06:16,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690752878] [2023-04-02 04:06:16,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:06:16,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:06:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:06:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:06:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:06:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:06:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 04:06:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 04:06:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 04:06:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 04:06:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 04:06:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 04:06:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 04:06:17,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:06:17,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690752878] [2023-04-02 04:06:17,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690752878] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 04:06:17,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780638115] [2023-04-02 04:06:17,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:06:17,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 04:06:17,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 04:06:17,281 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 04:06:17,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 04:06:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:17,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-02 04:06:17,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 04:06:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 04:06:17,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 04:06:17,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780638115] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:06:17,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 04:06:17,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2023-04-02 04:06:17,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991151573] [2023-04-02 04:06:17,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:06:17,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 04:06:17,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:06:17,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 04:06:17,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2023-04-02 04:06:17,667 INFO L87 Difference]: Start difference. First operand 1635 states and 2013 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 04:06:18,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:06:18,011 INFO L93 Difference]: Finished difference Result 3178 states and 3934 transitions. [2023-04-02 04:06:18,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 04:06:18,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) Word has length 102 [2023-04-02 04:06:18,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:06:18,020 INFO L225 Difference]: With dead ends: 3178 [2023-04-02 04:06:18,021 INFO L226 Difference]: Without dead ends: 1567 [2023-04-02 04:06:18,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2023-04-02 04:06:18,025 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 90 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 04:06:18,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 959 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 04:06:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2023-04-02 04:06:18,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1567. [2023-04-02 04:06:18,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1002 states have (on average 1.1786427145708582) internal successors, (1181), 1077 states have internal predecessors, (1181), 284 states have call successors, (284), 260 states have call predecessors, (284), 280 states have return successors, (426), 280 states have call predecessors, (426), 280 states have call successors, (426) [2023-04-02 04:06:18,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 1891 transitions. [2023-04-02 04:06:18,200 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 1891 transitions. Word has length 102 [2023-04-02 04:06:18,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:06:18,200 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 1891 transitions. [2023-04-02 04:06:18,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 04:06:18,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 1891 transitions. [2023-04-02 04:06:18,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 04:06:18,205 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:06:18,205 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:06:18,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 04:06:18,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 04:06:18,414 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:06:18,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:06:18,414 INFO L85 PathProgramCache]: Analyzing trace with hash -124527014, now seen corresponding path program 1 times [2023-04-02 04:06:18,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:06:18,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553309800] [2023-04-02 04:06:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:06:18,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:06:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:06:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:06:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:06:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:06:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 04:06:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 04:06:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 04:06:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 04:06:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 04:06:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 04:06:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 04:06:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:06:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 04:06:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 04:06:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 04:06:18,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:06:18,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553309800] [2023-04-02 04:06:18,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553309800] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 04:06:18,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268753070] [2023-04-02 04:06:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:06:18,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 04:06:18,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 04:06:18,840 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 04:06:18,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 04:06:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:18,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 04:06:19,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 04:06:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 04:06:19,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 04:06:19,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268753070] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:06:19,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 04:06:19,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 19 [2023-04-02 04:06:19,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33622441] [2023-04-02 04:06:19,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:06:19,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 04:06:19,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:06:19,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 04:06:19,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-04-02 04:06:19,180 INFO L87 Difference]: Start difference. First operand 1567 states and 1891 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2023-04-02 04:06:20,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:06:20,251 INFO L93 Difference]: Finished difference Result 4129 states and 5637 transitions. [2023-04-02 04:06:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 04:06:20,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 155 [2023-04-02 04:06:20,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:06:20,271 INFO L225 Difference]: With dead ends: 4129 [2023-04-02 04:06:20,271 INFO L226 Difference]: Without dead ends: 2914 [2023-04-02 04:06:20,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 202 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2023-04-02 04:06:20,280 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 513 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 04:06:20,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 306 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 04:06:20,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2023-04-02 04:06:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 2227. [2023-04-02 04:06:20,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 1418 states have (on average 1.1847672778561353) internal successors, (1680), 1523 states have internal predecessors, (1680), 407 states have call successors, (407), 369 states have call predecessors, (407), 401 states have return successors, (650), 397 states have call predecessors, (650), 403 states have call successors, (650) [2023-04-02 04:06:20,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 2737 transitions. [2023-04-02 04:06:20,612 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 2737 transitions. Word has length 155 [2023-04-02 04:06:20,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:06:20,612 INFO L495 AbstractCegarLoop]: Abstraction has 2227 states and 2737 transitions. [2023-04-02 04:06:20,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2023-04-02 04:06:20,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 2737 transitions. [2023-04-02 04:06:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 04:06:20,617 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 04:06:20,617 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 04:06:20,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 04:06:20,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-02 04:06:20,825 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 04:06:20,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 04:06:20,825 INFO L85 PathProgramCache]: Analyzing trace with hash 150232600, now seen corresponding path program 1 times [2023-04-02 04:06:20,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 04:06:20,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697676215] [2023-04-02 04:06:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:06:20,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 04:06:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 04:06:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 04:06:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 04:06:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 04:06:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 04:06:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 04:06:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 04:06:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 04:06:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 04:06:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:20,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 04:06:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:21,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 04:06:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:21,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 04:06:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:21,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:21,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 04:06:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:21,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 04:06:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 04:06:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:21,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 04:06:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:21,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 04:06:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:21,069 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-02 04:06:21,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 04:06:21,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697676215] [2023-04-02 04:06:21,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697676215] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 04:06:21,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746086747] [2023-04-02 04:06:21,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 04:06:21,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 04:06:21,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 04:06:21,071 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 04:06:21,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 04:06:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 04:06:21,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 04:06:21,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 04:06:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 04:06:21,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 04:06:21,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746086747] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 04:06:21,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 04:06:21,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 16 [2023-04-02 04:06:21,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538106657] [2023-04-02 04:06:21,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 04:06:21,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 04:06:21,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 04:06:21,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 04:06:21,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 04:06:21,261 INFO L87 Difference]: Start difference. First operand 2227 states and 2737 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-04-02 04:06:21,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 04:06:21,437 INFO L93 Difference]: Finished difference Result 3199 states and 3917 transitions. [2023-04-02 04:06:21,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 04:06:21,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 155 [2023-04-02 04:06:21,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 04:06:21,439 INFO L225 Difference]: With dead ends: 3199 [2023-04-02 04:06:21,439 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 04:06:21,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-04-02 04:06:21,446 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 4 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 04:06:21,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 731 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 04:06:21,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 04:06:21,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 04:06:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 04:06:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 04:06:21,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2023-04-02 04:06:21,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 04:06:21,448 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 04:06:21,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-04-02 04:06:21,449 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 04:06:21,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 04:06:21,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 04:06:21,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 04:06:21,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 04:06:21,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 04:07:06,044 WARN L223 SmtUtils]: Spent 44.18s on a formula simplification. DAG size of input: 215 DAG size of output: 246 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-02 04:08:02,639 WARN L223 SmtUtils]: Spent 56.40s on a formula simplification. DAG size of input: 237 DAG size of output: 257 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-02 04:09:00,176 WARN L223 SmtUtils]: Spent 56.32s on a formula simplification. DAG size of input: 154 DAG size of output: 207 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-02 04:09:54,859 WARN L223 SmtUtils]: Spent 54.65s on a formula simplification. DAG size of input: 231 DAG size of output: 248 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-02 04:10:37,810 WARN L223 SmtUtils]: Spent 42.95s on a formula simplification. DAG size of input: 215 DAG size of output: 246 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)